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Effects of age on survival and morbidity in gastric cancer patients undergoing gastrectomy

World Journal of Gastrointestinal Oncology 2017年第6期9卷 257-262页

作者： Yoshinori Fujiwara Shuichi Fukuda Masanori Tsujie hajime ishikawa Kotaro Kitani Keisuke Inoue Masao Yukawa Masatoshi Inoue Department of Digestive Surgery Nara HospitalKindai University School of Medicine Department of Digestive Surgery Kawasaki Medical School

To evaluate clinicopathological features and surgical outcomes of gastric cancer in elderly and non-elderly patients after inverse probability of treatment weighting (IPTW) method using propensity score. METHODSWe enrolled a total of 448 patients with histologically confirmed primary gastric carcinoma who received gastrectomies. Of these, 115 patients were aged > 80 years old (Group A), and 333 patients were aged < 79 years old (Group B). We compared the surgical outcomes and survival of the two groups after IPTW. RESULTSPostoperative complications, especially respiratory complications and hospital deaths, were significantly more common in Group A than in Group B (P < 0.05). Overall survival (OS) was significantly lower in Group A patients than in Group B patients. Among the subset of patients who had pathological Stage I disease, OS was significantly lower in Group A (P < 0.05) than Group B, whereas cause-specific survival was almost equal in the two groups. In multivariate analysis, pathological stage, histology, and extent of lymph node dissection were independent prognostic values for OS. CONCLUSIONWhen the gastrectomy was performed in gastric cancer patients, we should recognized high mortality and comorbidities in that of elderly. More extensive lymph node dissection might improve prognoses of elderly gastric cancer patients.

关键词： Gastric cancer Mortality Morbidity Elderly Lymphadenectomy Propensity score matching Prognosis Survival

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硅微波功率晶体管

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微纳电子技术 1977年第1期 10-16页

作者： hajime ishikawa 戴玲华

研制了一种在4千兆赫的频率下具有3瓦输出功率的硅平面NPN 晶体管。是由小信号晶体管的并联来实现的。功率晶体管特有的热问题由银做成的热沉来加以解决。本文叙述了功率晶体管的设计,功率晶体管特有的制造技术及其特性。

关键词：晶体管半导体三极管发射极千兆赫基区输出功率

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Pedunculated gastric tube interposition in an esophageal cancer patient with prepyloric adenocarcinoma

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World Journal of Gastrointestinal Oncology 2011年第5期3卷 75-78页

作者： Tatsuo Kanda Yu Sato Kazuhito Yajima Shin-ichi Kosugi Atsushi Matsuki Takashi ishikawa Takeo Bamba hajime Umezu Tsutomu Suzuki Katsuyoshi Hatakeyama Division of Digestive and General Surgery Niigata University Graduate School of Medical and Dental Sciences Division of Cellular and Molecular Pathology Niigata University Graduate School of Medical and Dental Sciences Department of Nursing School of Health ScienceNiigata University

Gastric carcinoma is one of the malignancies that are most frequently associated with esophageal *** describe herein our device for advanced esophageal cancer associated with early gastric cancer in the antrum.A 57-year-old man presenting with dysphagia and upper abdominal pain was admitted to our *** examinations revealed locally advanced squamous cell carcinoma (SCC) of the middle thoracic esophagus (T3N0M0 Stage ⅡA) and mucosal signetring cell carcinoma of the gastric antrum (T1N0M0 Stage ⅠA).Although the gastric tumor appeared to be an intramucosal carcinoma,its margin was obscure,so endoscopic en-bloc resection was considered *** chose surgical resection of the gastric tumor as well as the esophageal SCC after neoadjuvant chemotherapy with 5-fluorouracil and cisplatin for advanced esophageal *** transthoracic esophagectomy with three-field lymph node dissection,the gastric carcinoma was removed by gastric antrectomy,which preserved the right gastroepiploic vessels,and a pedunculated short gastric tube was used as the esophageal ***-eight months after the surgery,the patient is well with no evidence of cancer *** it minimizes surgical stress and organ sacrifice,gastric tube interposition is a potentially useful technique for esophageal cancer associated with localized early gastric cancer.

关键词： Antrectomy Early gastric cancer Esophageal cancer Esophageal reconstruction Gastric tube

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Energy calibration of tagged photons by the d(γ,π^-pp) reaction

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Chinese Physics C 2010年第1期34卷 35-38页

作者：韩运成 Nobuyuki Chiga Yu Fujii Kenta Futatsukawa Osamu Hashimoto Kentaro Hirose Takatsugu ishikawa Hiroki Kanda Masashi Kaneta Daisuke Kawama Kazushige Maeda Tomofumi Maruta Nayuta Maruyama Akihiko Matsumura Youhei Miyagi Koji Miwa Satoshi N. Nakamura hajime Shimizu Koutarou Shirotori Koutaku Suzuki Tadaaki Tamae Hirokazu Tamura Kyo Tsukada 王铁山 Hirohito Yamazaki School of Nuclear Science and Technology Lanzhou University Department of Physics Tohoku University Laboratory of Nuclear Science Tohoku University

The energy of tagged photons, which were provided from the internal photon tagging system of the Laboratory of Nuclear Science, Tohoku University, has been calibrated using the d（γ,π-pp） reaction. Charged pions and protons in the final state were detected with the Neutral Kaon Spectrometer （NKS2）. Photon energies were obtained from the reaction of d（γ,π-pp）. The derived photon energy was consistent with the design of the tagger system and the previous measurement using electron-positron pair production. The consistency demonstrates the performance of NKS2 and the capability of the photon energy calibration using d（γ,π-pp）.

关键词： deuteron pion photoproduction tagged photon

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In-situ evaluation for activated concrete in accelerator facility with scintillation-type gamma-ray spectrometer

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辐射防护 2020年第6期40卷 545-549页

作者： Go Yoshida Hiroshi Matsumura Koichi Nishikawa Akihiro Toyoda Yoshiharu Miyazaki Kazuyoshi Masumoto hajime Nakamura Taichi Miura High Energy Accelerator Research Organization(KEK) 1-1 OhoTsukubaIbaraki 305-0801Japan The Medical and Pharmacological Research Center Foundation Wo-32Inoyama-machiHakuiIshikawa 925-0613Japan

The assessment of activated concrete is particularly difficult during the decommissioning of an accelerator *** analysis by core boring is the only method of investigating the activity of concrete *** address this problem,an in-situ and nondestructive analysis method was developed to determineγ-ray-emitting nuclides and their specific activities in the concrete walls and floor by using a portable germanium semiconductor *** this work,we examined a substitute for Ge detector to establish a simpler and more convenient *** candidates,we focused on some scintillation type spectrometers,and the possibility of a substitute for a Ge detector was examined by both simulation and *** detection limits were roughly estimated through Monte Carlo simulation for various scintillation crystals,and it was found that 1.5-inch LaBr3,CeBr3,and SrI2 could distinguish the clearance *** was confirmed that the 1.5-inch LaBr3 could reproduce the calibration curve of the Ge detector in the *** required thickness and length of the radiation shield for suppressing the background radiation during the measurement was also determined for the convenience of an actual decommissioning work.

关键词： activation accelerator concrete scintillation detector PHITS code

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